I think Wayne is first and he greets Sandy. Who would Sandy be talking to if she arrives first?
Wayne is said to have made his statement when he first got to the party, not when the second guest arrived. And if there were nobody before him, he couldn’t comment on the guac when he first got there.
Chronos,
I’m reading it as Wayne arrives first, with Sandy arriving promptly after him, and Wayne speaks to her about the quacamole.
Sandy: Sorry I’m early! I hope it’s okay that I brought guacamole, although I forgot to get chips.
Mark: Sorry, I’m late. Is Leslie coming?
Leslie: Sandy, I’m so glad you’re here, I hate being the only girl.
Wayne: Hey, guacamole! Am I supposed to eat this with my hands?
Andrew: I’ve got chips!
Patricia: All you’ve got are chips and guacamole? Well, I brought some salsa. Leslie, why do you have guacamole on your hands?
Amy: Well, my arrival makes it just three guys and three girls so far…and here I thought I was late!
Dave: When Rick arrives, tell him I’ve got that spinach dip he loves.
Rick: I’m thirsty. That salsa sure is hot. When’s someone with drinks going to get here?
Peter: Hey, Rick! I didn’t think you were going to make it. I just saw three of the girls trying to park their cars outside, but no sign of Mike yet.
Barbara: I brought Coke, but Diane’s got the cups. Oh, she’s not here yet?
Diane: I brought plates! What do you mean I was supposed to bring cups? Burt will bring the cups.
Suzie: Diane! Peter! It’s been ages! I brought some guacamole…
Burt: I’m not Mike, turn on the lights, would ya?
I see that Idle Thoughts lists Sandy as being first, but who would she be apologizing to?
Ethelrist’s solution doesn’t work:
So there were two people who weren’t late, so anyone apologizing for being late can’t be the second person there.
The party is at Mike’s mom’s place. I didn’t include this part because I was trying to simplify the directions (make them as short as I could) and most people seemed to get the right answer without needing to know that part anyway.
So yeah, Mike’s mom is already there and that’s who Sandy is talking to at the start.
It still only has one answer, though…and that is, the guac has to come first, because Wayne comments on it as if it’s already there. I can see the point of him saying it right as Sandy walks in (thus making him first), but the more simple answer, I think, is that guac came first and then his comment.
But regardless of whether leaving out that part messes with some posters logic of it or not, I’m sorry for leaving it out.